2331013021 has 6 divisors (see below), whose sum is σ = 2476197530. Its totient is φ = 2193894336.

The previous prime is 2331013019. The next prime is 2331013049. The reversal of 2331013021 is 1203101332.

It can be written as a sum of positive squares in 3 ways, for example, as 395452996 + 1935560025 = 19886^2 + 43995^2 .

It is not a de Polignac number, because 2331013021 - 2¹ = 2331013019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2331012986 and 2331013004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331013621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4032606 + ... + 4033183.

Almost surely, 2^2331013021 is an apocalyptic number.

It is an amenable number.

2331013021 is a deficient number, since it is larger than the sum of its proper divisors (145184509).

2331013021 is an equidigital number, since it uses as much as digits as its factorization.

2331013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8065823 (or 8065806 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 2331013021 is about 48280.5656657003. The cubic root of 2331013021 is about 1325.9126065567.

Adding to 2331013021 its reverse (1203101332), we get a palindrome (3534114353).

The spelling of 2331013021 in words is "two billion, three hundred thirty-one million, thirteen thousand, twenty-one".